| Niiro vs Steve | 94–136 | 40.87% |
| Niiro vs Heihachi | 112–113 | 49.78% |
| Niiro vs Jin | 104–112 | 48.15% |
| Niiro vs King | 107–106 | 50.23% |
| Niiro vs Kazuya | 103–110 | 48.36% |
| Niiro vs Bryan | 73–96 | 43.20% |
| Niiro vs Hwoarang | 70–78 | 47.30% |
| Niiro vs Reina | 80–68 | 54.05% |
| Niiro vs Law | 66–73 | 47.48% |
| Niiro vs Dragunov | 56–80 | 41.18% |
| Niiro vs Clive | 60–68 | 46.88% |
| Niiro vs Eddy | 50–73 | 40.65% |
| Niiro vs Lidia | 58–59 | 49.57% |
| Niiro vs Lili | 42–64 | 39.62% |
| Niiro vs Yoshimitsu | 44–56 | 44.00% |
| Niiro vs Paul | 44–53 | 45.36% |
| Niiro vs Lee | 62–34 | 64.58% |
| Niiro vs Azucena | 55–41 | 57.29% |
| Niiro vs Lars | 43–52 | 45.26% |
| Niiro vs Asuka | 40–54 | 42.55% |
| Niiro vs Jun | 41–47 | 46.59% |
| Niiro vs Victor | 37–47 | 44.05% |
| Niiro vs Xiaoyu | 44–39 | 53.01% |
| Niiro vs Nina | 36–39 | 48.00% |
| Niiro vs Jack-8 | 30–38 | 44.12% |
| Niiro vs Leo | 27–37 | 42.19% |
| Niiro vs Raven | 26–36 | 41.94% |
| Niiro vs Anna | 26–36 | 41.94% |
| Niiro vs Leroy | 22–39 | 36.07% |
| Niiro vs Devil Jin | 16–30 | 34.78% |
| Niiro vs Feng | 13–31 | 29.55% |
| Niiro vs Kuma | 19–20 | 48.72% |
| Niiro vs Alisa | 14–23 | 37.84% |
| Niiro vs Fahkumram | 16–21 | 43.24% |
| Niiro vs Shaheen | 17–16 | 51.52% |
| Niiro vs Claudio | 15–14 | 51.72% |
| Niiro vs Armor King | 8–20 | 28.57% |
| Niiro vs Zafina | 10–11 | 47.62% |
| Niiro vs Panda | 7–11 | 38.89% |
| Niiro vs Miary Zo | 7–8 | 46.67% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.